Lock



F. E. BEST Jun 1E6, 1935 LOCK Filed Feb. 11,1929

INVENTOR Patented July 16, 1935 PATENT OFFICE LOCK Frank Ellison Best,Seattle Wash, assignor to Frank .E. Best, Inc., Seattle, Wash., acorporation of Washington Application February 11, 1929, Serial Naesam,

' '1 Claims. (01. iii-47) i My invention relates to improvements inlooks of the lock controlled assembly type in which a lock core issecured within a receptacle by key controlled means and an object of myinvention is to provide a lock of this nature having snap latch meansfor looking a lock core into the receptacle, said lock core beingreleasableby use of a key. In my prior Patent Number 1,384,022 issuedJuly 5, 1921, I have disclosed a lock in which a core is arranged to beboth locked into and released from a core case by the operation of akey.

' In this application, Idisclose a lock in which a lock core is arrangedto be locked into a receptacle 15 or core case by snap latch means andcan only be released therefrom by the use of a key. Another object ofthe invention is to provide a pin tumbler lock of this nature which maybe made in a very small size thus making it especially desirable for useon motor vehicles and for other uses where a lock of small size isrequired. l V i A further object is to provide a lock of this nature inwhich the usual integral head of the key plug is formed on the rear endand the head portions at the front of the key plug are secured to thekey plug in the process of assembly of'the lock and may be of differentmaterials which may nature which is strong and substantial inconstruction, durable and efiicient in operation, cheap to manufacture,easy to install within the be changed.

Other and more specific objects will be apparent from the followingdescription taken in connection with the accompanying drawing. I

In the drawing Figure 1 is a view in end elevation of a lock constructedin accordance with my invention. I l

Figure 2 is a view of the same partly in side elevation, and partly insection on broken line 2-2 of Figure 1. i f

Figure: 3 is a cross section through the core substantially on brokenline 33 of Figure 4, the tumbler pins being omitted. i: a Figure 4 is across section of the core substantiallyon broken line 4-4 of Figure 3..

Figure 5 is a detached view in longitudinalseo tion of the key plug andface plate for the same,

showing the face plate as it may appear before 551' it has been appliedtothe key plug.

be finished differently for ornamental purposes; Further objects are toprovide alock of this lock receptable and readily removable by the use,of the proper key, to permit the combinationto Figure 6 is a crosssection substantially broken line 66 of Fig. 3.

Like reference numerals designate like parts throughout the severalviews.

Referring to the drawing, I have shown a lock 5 core, including a bodyportion of figure 8 shape in cross section, having one tubular part 6for the reception of a oylindricalkey plug 1 and sleeve 8 and having anon-tubular portion 9 which is provided with transverse holes ill forthe reception of the usual tumbler pins l l, springs l2 and caps l3. p

The key plug 1 is surrounded by the sleeve 8 which fits snugly withinthe bore of the tubular body portionli and is rotatable relative to boththe plug] and body portion 6 and said sleeve and key plug are bothprovided with bores I I for reception of the tumbler pins ll, thusforming a double shear line lock in which the key plug may be turnedwithin the sleeve when the breaks in the tumbler pins register with 'theshear line formed at the periphery of the key plug or in which the keyplug and sleeve may be turned as a unit within the body portion 6 whenbreaks in the tumbler pins register with the shear line formed at theperiphery of the sleeve 8.

The key plug 1 has an integral head [5 on its inner end, which may beprovided with any suitable means, as a throw pin NS, for engaging withany'suitable bolt or secondary lock mechanism. Said key plug is providedat its outer end with a face plate I! which may be recessed as atl8 forthe reception of a bell shaped end I9 of the key plug 1 whereby the keyplug 1 and face plate l'l may be secured together by a swaging processwhen the lock is assembled. A face 20 is also swaged or riveted onto theend of the solid portion -9 of the core body by stud means 2 l.

For the purpose of locking this lock core within a'suitable receptacleor housing 40 I provide a locking lug 22 which is swingingly mountedwithin a recess 23 in the core body 9 and is urged outwardly by a spring24. The rear end of the locking lug 22 is provided with a tongue 25which fits into, a slot 26 and supports said locking lug for swingingmovement. The rear end of the locking lug'adjacent thetongue 25 abutssolidly against the wall of the core body 9. The rear end of the lockinglug is cut away on the inner side to afford room for an enlargement21.0n the rear end of the spring 24, whereby the spring 24 is held inthe correct position. The enlargement 21 also makes it possible toconstruct a spring which will withstand bending repeatedly withoutbreaking.

For the purpose of limiting the outward swinging movement of the lockinglug 22 and providing a means by which said locking lug may be retracted,I provide a stop member 28 which is slidable crosswise of the lockinglug by dove tail means 29 and is located on the inner side and to-- wardthe forward end of said locking lug. An offset extension 30 on one endof the stop member 28 extends downwardly into a recess 3| in thethickened upper portion 32 of the sleeve 8 andv is arranged to beengaged by a portion 33 of said sleeve so that the locking lug may beretracted by' the position shown in Figure 4. The recess 3| in:

the sleeve is large enough to permit the stop member 28 to be pressedinto a fullyretracted position by applying a pressure against theoutside of the locking lug 22 when the tumbler pins are aligned. Thelength of the stop member 2,8 is not greater than the width of thelocking lug 22 so that in assembling the device the spring 24 may firstbe placed in the recess23, the locking lug 22 with the stop membertelescopically en gaged therewith and flush atboth top and bottom maythen be inserted and the stopmember may be allowed to drop down into therecess 3| in the sleeve thus completing the assembly and making itimpossible to remove the locking lug. The dropping down of the stopmember 28 is aidedby the spring 24 which exerts a pressure againstaninclined surface 35 on said stop lug, and said spring further serves tolock the stop lug down. s

The operation of this lock is similar to tl'lat of the usual pintumblerlock in so far as its bolt op-' erating function is concerned, the usualoperating key aligning the cuts oi the tumbler pins M on the shear lineat the periphery of the key plug and permitting rotation of the key plugwithin the sleeve 8 while said sleeve 8 is locked against rotation, Thelockcore may be quickly and easilyslipped into a receptacle, the lockinglug being pressed back by contact with the receptacle until the coreisfully inserted and in its proper position, whereupon the lockinglug'22 may snap out and lock behind a suitable shoulder 34 of thereceptacle into which the core is inserted. The receptacle and theshoulder 34 are shown in Figures 3 and 6, it being understood that theform of this receptacle may be varied to suit different requirements. Toretract the locking lug 22 from engagement with the shoulder 34 and thuspermit the core to be withdrawn from its receptacle itis necessary touse a control key which willalign thecuts in the tumbler pins IE on theshear line formed at the outer periphery of the thickened portion 32 ofthe sleeve 8 thus allowing the sleeve 7 8 to be turned to the rightwithin the portion 6 far enough to draw in the locking lug 22, clear ofthe shoulder 3d; q r s The lock core can thus be quickly andeasilyinserted into its receptacle without the use of a key, the lug 22snapping into locking engagement with the shoulder, but to remove saidcore a suitable key must be used. V

The foregoingv description and accompanying drawingclearly disclose whatI now regard as a preferred embodiment of my invention but it will beunderstood that this disclosure is merely illustrative and that changesin the invention may be made withinthe: scope and spirit of'thefollowing claims;v I

I claim: I

1. In a lock, a receptacle, a lockcore'arranged to be placed within saidreceptacle, snap latchmeans for locking said lock c0re-within saidreceptacle, throw means on said lock core, and pin tumbler lock means insaid lock core having two shear lines operable by difierent keycombinations, one shear line controlling said throw means and the othershear line controlling the core having two shear lines operable bydifierent key combinations, one shear line controlling said throw meansand the other shear line controlling the retraction of said snaplatch-means.

3. A lock, embodying a lock core, meansforming a receptacle for saidlock core, a locking lug on said lock; core for'locking said core withinsaid receptacle, a spring urging said locking lug into engagement withthe receptacle, throw means on said lock core, and pin tumbler lockmeans in said lock core having two shearlines operable by different keycombinations, one of said shear lines controlling said throw means andthe other shear line controlling the retraction of said locking lugwhereby said lock, core is released. l

4. A lock core including a body portion-hav ing a recess in one side, alocking lug pivotally mounted for swinging movement within said recess,a spring urging said lug outwardly; said lug being free to be pressedinto said recess, throw means on said lock core, and pin tumbler lockmeans in said lock core having two shear lines operable by different keycombinations, one of said shear lines controlling said throw means; andthe other-shear line controlling the retraction of said lockinglugwhereby said lock core isreleased for retracting said locking lugwithin said recess.

5. A lockcore, embodying a body portion having a recess in one side, alocking lug operable Within said recess and having one end pivotallyconnectedwith the wall at the end of said rccess, a springdisposed'behind said locking lug for urging the non-pivoted end of said lugVoutwardly, means for limiting the outward move ment of said locking lug andlock" controlled means for retracting said locking lug. V

6. Ina lock core, a body portion having a recess in one side, a lockinglug operable within said recess and pivotally retained at one end, saidlocking lug having" transverse dovetail groove means in its inner side,a spring behind said locking lug for urging the same outwardly, a keyplug rotatable within said body portion, a sleeve on said key;plug, saidsleeve having a recess near the location of the recess in said'body'portion and a stop" member .slidable in' the dovetail groove, means insaid locking lug and extending into the'rccess' in said sleeve forlimiting the outward movement of said locking lug and retracting saidlocking lug in responseto turning of said sleeve. s V

7. In a lock-core, a body portion-having a recess in one side, a lockinglusoperable with-' in said recess, a. key plug rotatable within said.core, and pin tumbler lock means in said lock turning the sleeve in aclockwise direction from operating means connecting said sleeve-withsaid locking lug whereby said locking lugmay be positioned byr'otatively' moving s'aidsleeve'" H 3 L QFRANK ELLISON BEST;

